Uponor infrastructure technical handbook june 2011

Page 242

7.1

Waste water treatment system – Introduction Uponor's solutions for waste water systems are used for houses and properties which are not connected to the municipal waste sewer network. This applies primarily to holiday home areas as well as houses in the countryside.

Waste Water Treatment

The basic principle for an infiltration system is that sewage from a property is transported to a septic tank where the sludge is allowed to settle and from which the water is then transported onwards for subsequent treatment. The sewage is infiltrated through the existing or constructed layer of soil, meaning it is treated naturally. If the local conditions mean the infiltration principle cannot be used, you can install a small sewage treatment plant which replaces the septic tank and the subsequent treatment. A traditional infiltration system is robust and easy to set up, either as • gravitational infiltration • Infiltration with pumping (no gravitation)

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However, there are various local conditions that may impede a traditional infiltration system. For example, the groundwater may be too high, there may be poor soil conditions or areas where particular attention must be paid to protecting the potable water supply. If it is not possible to set up a traditional infiltration system, there is a range of other solutions to choose from: • Sand filter trench with phosphorus trap • Small sewage treatment plant • Holding tank • Dry toilet • Uponor's extensive product range covers most installation situations. • The complete range is set out in a separate product list/price list in Uponor’s web site.

Uponor Waste water treatment system


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